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Former detective Michael Knox opines on Dr. Vincent J. M. Di Maio's testimony

Day 11 of George Zimmerman trial testimony

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SANFORD, Fla. – WPLG-Local 10 Brian Ely talks to Michael Knox, a forensic science and criminology consultant, about Dr. Vincent J. M. Di Maio's testimony in the George Zimmerman trial Tuesday.

Knox is a former police detective from Jacksonville, Fla. He is a recognized expert in firearms, ballistics, crime scene reconstruction, death investigations, bloodstain pattern analysis, and traffic accident reconstruction.